High-Dynamic-Range Chipless Microwave Resonator-Based Strain Sensor

被引:17
|
作者
Baghelani, Masoud [1 ,2 ]
Abbasi, Zahra [1 ]
Daneshmand, Mojgan [1 ]
机构
[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 1H9, Canada
[2] Ilam Univ, Dept Elect Engn, Ilam 69315516, Iran
基金
加拿大自然科学与工程研究理事会;
关键词
Chipless resonator; elastomer; high dynamic range; high-precision strain sensing; split-ring resonator; strain sensor;
D O I
10.1109/TIM.2021.3069375
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Microwave split-ring resonators are utilized as sensors in a wide variety of applications due to their remarkable features, such as extremely low cost, high sensitivity, and relatively high quality factor. In this article, another application is enabled according to a recently demonstrated chipless tag-reader structure providing the possibility of simplifying the sensor structure from a "multilayer structure" consisting of a dielectric substrate sandwiched between two metallic layers to a single-layer structure formed from a conductive material. This capability is specifically important for strain sensing applications as it brings the possibility of utilizing low stiff conductive materials instead of copper (which is the primary material used in microwave application) while keeping the reader structure with high-quality microwave application-specified substrates intact. With the explained approach in this work, a low tensile silver-aluminum silicone elastomer conductive material is considered for the tag providing a very high tensile dynamic range. According to the whole sensing system structure, as high elongation range of as 20% and the high sensitivity in the range of 25 MHz/1% of strain is achieved. Multiple simulations and experimental results support the idea of the novel microwave strain sensor proposed in this work.
引用
收藏
页数:7
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